DBH 9511/85 radial shaft seal — 28 x 40 x 6

DBH 9511/85 belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 9511/85 and any equivalents.

The DBH 9511/85 is a radial shaft seal that fits a 28 mm shaft, a 40 mm housing bore and a 6 mm height. Its job is to keep lubricant where it belongs and to keep dust, water and other particles out, protecting bearings and bushings from damage. The seal presses into the housing while its flexible lip rides on the rotating shaft. In gearboxes, pumps and electric motors, this kind of sealing is what keeps internal components running longer.

This seal follows the Lx design: a single sealing lip with a metal case, which suits assemblies where axial space is tight. The dimensions are shaft 28 mm, housing bore 40 mm and height 6.00 mm. The 9511/85 code tells you the geometry and the lip material, normally nitrile rubber (NBR) for resistance to mineral oils and greases. DBH is one of the brands MR supplies, so this size can be quoted directly.

You will find this seal in gearboxes, centrifugal pumps, electric motors, compressors and machine tool spindles. In each case it stops oil from escaping and contaminants from entering, which cuts wear on bearings and gears. Speed reducers and belt or chain drive systems also use it, since they run at moderate shaft speeds and need sealing that does not demand constant attention.

Installation calls for a polished shaft free of burrs and hard enough not to damage the lip. Coat the lip with the same oil the machine uses before fitting, and drive the seal in with a press or installation tube that contacts the outer diameter only, never the lip. The housing must be clean and free of burrs. If the shaft is worn, a wear sleeve is an option. Peripheral speed, temperature and the fluid being retained all affect selection.

For an equivalent, contact MR and mention code 9511/85 or the 28x40x6 mm dimensions. Alternatives from other brands or in different configurations, such as a double lip or FKM for high temperatures, can be sourced. Advice on compatibility with your application is also available. Exact designation and dimensions matter to avoid leaks or early failure.

To request a quote for the DBH 9511/85 seal, send the code by WhatsApp to MR. You will receive commercial and technical information promptly. Questions about installation or selection are welcome, and the team can help you choose the right option for your machine. Ask about other sizes or about this product as well.